alexander



2 Sheets-Sheet 1.

H. O. ALEXANDER. Tubular Lantern.

Patented Oct. 19, I880.

g; Mlfiasses; HMQ.(11AW [72 082M02 2 Sheets-Sheet. 2 H. G. ALEXANDER.Tubular Lantern.

No. 233,390. Patented Oct. 19,1880.

We. WON-MM inventor:

M'Znesses: M m Myth 51PM NFETERS, PNOTO-UTNOGRAPNER. WASHINGTON D CUNITED STATES PATENT OFFICE.

HORACE O. ALEXANDER, OF NEW YORK, N. Y.

TUBULAR LANTERN.

SPECIFICATION forming part of Letters Patent No. 233,390, dated October19, 1880.

Application filed December 9, 1879.

T 0 all whom it may concern:

Be it known that 1, HORACE O. ALEXAN- DER, of New York, in the countyand State of New York, have invented certain new and useful Improvementsin Tubular Lanterns; and I do hereby declare the following to be afull,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being bad to the accompanying drawings, and to lettersof reference marked thereon, which form a part of this specification.

The invention relates to the construction and arrangement of theair-tubes and deflecting-plates of tubular lanterns.

Heretofore tubular lanterns have been made with the ends of the tubesopen and provided with deflecting-plates placed across the ends of thetubes. They have also been made with a section of the tube removed andin its place several conical ring-deflectors.

The first arrangement requires the tubes to terminate outside of thelantern. They cannot be connected with the top of the lantern, or withthe heating-chamber surrounding the body of the lantern, or with eachother, while with the conical ring-deflectorthe tube is open on allsides.

The object of my invention is to improve and perfect the construction oftubular lanterns; and the invention consists in locating the opening ofthe tubes at the side, in combination with a pair of deflecting-platescrossing the opening, one of which is longitudinal with and theothertransverse to the axis of the tube, the tubes on either side of thelantern being connected with each other at some point above theseopenings. The opening is located at the side of the tube next to thelantern, where it is protected from a gust of wind which might blowdirectly into it and be too strong for it; and for the further reasonthat lateral currents of air are to some extent deflected by the globeof the lantern toward the openings. This arrangement permits the tubesto be extended above or beyond the openings and to connect across witheach other.

Figure l is a side elevation of a lantern which embodies my invention,one-half of it being shown in section. Fig.2 illustrates the applicationof my invention to a hall-lamp.

The openings are located on the inner side of the tubes 0, and at pointsmidway between the top and bottom, so that the tubes can be continuedabove and beyond the openings and connected with each other above thetop of the lantern, and also so that the openings may be protected fromdirect gusts by the globe.

a is a vertical plate crossing an opening in the air-tube c. The plateprojects out from the tube, and it may extend into the tube some littledistance, and even divide it at that point into two channels.

bis a horizontal plate crossing each opening and intersecting thevertical plate to. These do not extend into the tube at all, but areentirely outside. The plates extend far enough vertically andhorizontally to afford considerable surface for the wind to strikeagainst. The air is conducted by the tubes to the space under theair-cone and around the wick-tube.

In Fig. l the air'tubes c are shown as opening into a shallow chamber,d, on the top of the oil-fount, and the chamber opens at its centerdirectly into the space around the wicktube.

In Fig. 2 the air-tubes 0 open into a cup, 6, in which the fount of thelamp rests. When the fount is placed in the cup 6 an open space is leftunderneath it, and the air-tubes (shown dotted in Fig. 2) conduct theair up through the fount to the space beneath the air-cone.

It makes no difference how much or how rapidly the lantern is swung inthe air or from which direction the Wind blows, some air will always bedeflected into one or the other of the tubes, and the supply will bemore steady and uniform than has heretofore been the case.

Having thus described my invention, what Iclaim as new, and desire tosecure by Letters Patent, is-- A tubular lantern or lamp having the sidetubes, 0, with openings in their sides, and the longitudinal andtransverse deflecting-plates a and b, and the tubes 0, continued abovethe openings and connected with each other, substantially as and for thepurpose set forth.

In testimony that I claim the foregoing I- have hereunto set my handthis 2d day of December, 1879.

HORACE O. ALEXANDER.

Witnesses A. J. BAILEY, D. B. HARRISON.

